Speaker



FIG. 1 is a perspective view showing a speaker.

FIG. 2 is a front view of a speaker.

FIG. 3 is a rear view of a speaker.

FIG. 4 is a top view of a speaker.

FIG. 5 is a bottom view of a speaker.

FIG. 6 is a side view of a speaker; and,

FIG. 7 is a side view of a speaker.

The dot-dot-dash broken lines represent the bounds of the claimed design while all other broken lines are included for the purpose of illustrating portions of the speaker; the broken lines form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 